Delivering Modulation Solutions 850 nm 28 Gb/s NRZ The -850nm-28Gbps-NRZ is an optical modulation unit that generates high performance NRZ optical data streams at 850 nm. The equipment incorporates a modulation stage based on a specialy design high data rate LiNb0 3 Mach-Zehnder modulator, coupled with a high performance RF driver and an automatic bias control circuitry. It can also receive an internal laser source (DFB) and a photodetection stage. The -850nm-28Gbps-NRZ provides R&D and production engineers with the peace of mind of a turn-key instrument and state of the art performance, equivalent to its classical 1550 nm counterpart. It can be used as a reference transmitter in optical telecommunications laboratories, or in production test beds, and is especially useful for 100 GbEthernet related applications. Features 100 Mb/s up to 44 Gb/s Short rise and fall time High Q factor Automatic bias control Although labelled 28 Gb/s because of the current bandwidth limitation of 850 nm telecom receivers, the -850nm-28Gbps-NRZ is designed and dimensioned for 44 Gb/s. The 28-44 Gb/s are also available at 1550 nm, 1310 nm and 1060 nm. Performance Highlights Parameter Min Typ Max Unit Applications Optical wavelength range Modulation format 850 nm band NRZ Telecom laboratories Components characterization Transmission system test Production test Rise / fall time - 15* - ps RMS added jitter - 1.5 - ps Q-factor - 13 - - * measurement limited by photodector bandwidth. 28 Gb/s Eye diagram Options DFB laser Photodetector Multi-channels version NRZ 12.5 Gb/s version 1550 nm, 1310 nm, 1060 nm Stressed eye 100 GbE version Alternative modulation formats RZ, QPSK, DPSK,... p. 1/6
Delivering Modulation Solutions 850 nm 28 Gb/s NRZ Functional Block Diagram Back Panel Front Panel Laser Power Control - GUI Laser l Control - GUI Laser Out Laser Power Control In Mod DC MBC MBC Control - GUI Modulator RF Driver MBC Control - Display & Keypad Gain Control In Data Cross Point Control Out Mod PRV In PRV Out PRV The -850nm-28Gbps-NRZ integrates : a high bandwidth, chirp-free, X-cut LiNb0 Mach-Zehnder modulator, 3 a high bandwidth NRZ RF driver with gain and crossing level adjustment for eye diagram optimization, a bias control circuit to lock the Mach-Zehnder modulator in quadrature mode and ensure a highly stable output optical signal, an optional laser source, DFB, with its high precision driver that allows control of output power and wavelength, an optional high bandwidth photo-receiver (PRV). p. 2/6
850 nm 28 Gb/s NRZ Input Electrical Specifications User supplied, not a specification Input electrical data-rate - Single ended 0.1-28 Gb/s Modulation format - Single ended NRZ - Rise / fall time t r / t f 20 % - 80 % - 15 18 ps Impedance matching Z IN - - 50 - W Input signal amplitude V IN Single ended - 0.5 - V pp Input Optical Specifications User supplied, not a specification Laser type - CW DFB - Optical wavelength range - - 780 850 900 nm Polarization - - Linear and controlled - Power P IN CW 1 20 50 mw Output Optical Specifications Insertion loss IL At maximum modulator transmission - 6 8 db DC extinction ratio ER DC - 20 23 - db Return loss ORL - -40-45 - db Chirp a - -0.1 0 0.1 - Output Modulated Signal - Measured with Photoreceiver Output data-rate - Single ended 0.1* - 28 Gb/s Driver gain range G Adjustable - 3 - db Driver cross point - Adjustable 45 50 55 % Rise / fall time t r / t f 20 % - 80 % - 15 18 ps Added jitter J RMS J RMS = J 2 RMS-total - J2 RMS-source - 1.5 2 ps Dynamic extinction ratio D ER - 10 13 - db Electrical return loss S 11 - - -10 - db * Automatic Bias Control is warranted from 5 Gb/s up to 44 Gb/s. Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Symbol Min Max Unit Optical input power OP in - 17 dbm RF input power EP in - 5 dbm p. 3/6
850 nm 28 Gb/s NRZ Optional 850 nm DFB Laser Specifications Wavelength l Other wavelength on request 845 852 855 nm Laser type - - DFB - Optical output power - CW - 40 50 mw Spectrum linewidth Dl FWHM - 2 - MHz Optical return loss ORL - 30 35 - db Side mode suppression ratio SMSR - 30 - - db Optical output power adjustment P CW Front & back panels with GUI 1-40 mw Wavelength laser tuning range - Back panel with GUI - 0.8 1 nm Optional Photo-receiver Specifications Photodetector type - AC Coupled PIN with TIA - Input fiber type - - Multimode fiber - Operating wavelength range l - 800 850 900 nm Detector bandwidth f 3dB From 100 khz - 20 - GHz Responsivity S @850 nm - 0.3 - A/W Optical sensitivity - @850 nm, 25 Gb/s, 2 31-1 PRBS - -6.5 - dbm Overload - 50 % duty cycle - 4 - dbm Conversion gain - @850nm, Single ended - 75 - V/W Detector output impedance - - - 50 - W p. 4/6
T E C H N O L O G I E S 850 nm 28 Gb/s NRZ Eye Diagrams The following equipment was used in obtaining these results : - Pulse Pattern Generator : Anritsu MP1758A with Mux Centellax MS4S1V2M - Oscilloscope Agilent 86100B with time base precision 86107A - Photo-receiver 850nm 10 Gb/s data rate Input signal Output response 20 Gb/s data rate Input signal Output response 28 Gb/s data rate Input signal Output response p. 5/6
850 nm 28 Gb/s NRZ Dimensions - Interfaces - Compliance Dimensions Dimensions Weight Power supply (rear panel) 19 inches x 3U 3 kg - 6.6 pounds 100-120 V / 220-240 V automatic switch, 50-60 Hz Interfaces Optical connectors RF connector Fiber Remote type FC/UPC - FC/APC - SC/UPC 50 W - V female Polarization maintaining fiber, PM1550 MBC - Laser - USB type B with Labview driver Compliance Safety EN 60625-1 Marking CE Ordering Information -W-DR-OL-ORx-XX W = Wavelength range : 1550nm, 1310nm, 1060nm, 850nm DR = maximum output Data-Rate : 12.5Gbps, 28Gbps, 44Gbps OL = Laser Option, omit if no laser : wavelength in nm ORx = Photo-receiver Option, omit if no photo-receiver- Rx : Photo-receiver XX = Input / Output connectors, FA : FC/APC - FC : FC/UPC - SC : SC/UPC V1, PT-January-2012 Example : -850nm-28Gbps-850nm-Rx-FA is a modulation unit for 850 nm, 100 Mb/s - 28Gb/s NRZ optical modulated signal, with DFB laser at 850 nm and photo-receiver, FC-APC connectors. About us Photline Technologies is a provider of Fiber Optics Modulation Solutions based on the company LiNb0 3 modulators and high-speed electronics modules. Photline Technologies offers high speed and high data rate modulation solutions for the telecommunication industry and the defense, aerospace, instruments and sensors markets. The products offered by the company include : comprehensive range of intensity and phase modulators (800 nm, 1060 nm, 1300 nm, 1550 nm, 2000 nm), RF drivers and modules, transmitters and modulation units. ZI Les Tilleroyes - Trépillot 16, rue Auguste Jouchoux - 25000 Besançon - FRANCE tél. : +33 (0) 381 853 180 - fax : + 33 (0) 381 811 557 Photline Technologies reserves the right to change, at any time and without notice, the specifications, design, function or form of its products described herein. All statements, specification, technical information related to the products herein are given in good faith and based upon information believed to be reliable and accurate at the moment of printing. However the accuracy and completeness thereof is not guaranteed. No liability is assumed for any inaccuracies and as a result of use of the products. The user must validate all parameters for each application before use and he assumes all risks in connection with the use of the products. p. 6/6